Type-writing machine.



vl'n atenued Jan. 16, 1917.

2 SHEETS-SHEET I.

Arron/175v mums Finns, Inc 4 Lmo" msmuavuu. n. c.

E. B. HESS mfc. MYERS.

TY PE WRITING MACHINE. APPLICATION FILED APR. I4. 1916.

Patented Jan. 16,1917.

2 SHEETS SHEET 2- WITNESSES Norms Pnms. Ina. Lmm" Human". n. c,

' To all whom it may concern.-

mm B. HESS AND Lewis 0. MYERS, or BROOKLYN, new YORK, assrsnons T0 ROYALTYPEWnI'rEn COMPANY, me, or NEW YonK, n. Y., A conronnrron or new YORK.

original application filed May 3, 1915, Serial Be it known that we,EDWARD B. Hess and LEWIS C. Mrnns, of the borough of Brooklyn, county ofKings, and State of New York, citizens of the United States of A1ner-"ica, have jointly invented certain new and useful Improvements inType-Writing Machines, of which the. following is a specification.

This invention relates to typewriting machines of the class in which thekey levers and type bars are held in normal substantially horizontalpositions by springs operatively connected therewith, and it consists innovel means hereinafter described whereby the springs may besimultaneously adjusted to vary their tension. This mecha- ,nis'mpreferably comprises a frame mounted the lengths of the-springs andthereby vary the tension applied to the key levers.

Figure 1 is a central section of themachine,'looking toward the left;Fig. 2 is a perspective view of an adjustable rocking frame or plate towhich one end of each spring of the type bar is attached, and Fig. 3 isa plan view of the lower part-of the rear end of the machine frame andthe rocking frame.

The parts of a Royal typewriter shown to illustrate the application ofthe features of this invention thereto may be briefly stated asconsisting of the main frame 6, carriage 7, carriageshift 8, )laten 9,spacing lever 10, paper pan 11, type bars 12, type head rest 13,universal bar 14, ribbon spool cover or housing 15, top casing and dustguard 16.

The key levers 17 are each connected by a vertical link 18 to a frontlink 19 connected at the'rear end-to type bar 12 by a link 20. To link20 is secured a bar or link 21 having the rear end bent to engage theuniversal bar 14. On each universal bar connecting link 21 is a spring22. whose rear end connects with an adjustable rocking frame. 23, as andfor the-purpose hereafter described. The inner ends of the key leversare'piv- TYPE-WRITING MACHINE.

No. 25,384. Divided and this application filed April 14, 1916. SerialNo. 91,060.

otally supported on a bearing bar or comb bar 25 extending across themachine.-

The supporting bar 30 carrying the bearings of the front links 19 has aflange 31 at its inner or rear side to protect the bearings from dirtfrom the inner part of the machine, the links being bent, shown, toextend down under the flange 31. and beneath the type head rest 13. Theupper side of the bar 30 is sloped downwardly toward the front and aboveit is secured a dust guard or shed 32, whose upper part is laterallycurved to conform to the. curvilinear arrangement of the type heads, toafford free access for cleaning the type and its front part extendsdownwardly to the key board, acting as a protecting apron for the frontof the machine.

The frame 23 for the type bar springs 22 is held between lugs 34extending inwardly from the back wall of the frame 6, and is free torock on studs 35 which pass through said lugs. A set screw 36 fitted ina boss 37 at the central lower part of the frame 28 abuts against theback wall of the frame 6, and by it the upper end of the frame to whichthe springs 22 are attached may be adjusted to vary the tension of thesprings collectively. It is sometimes found that springs of thecharacter of are apt, from irregularities in the universal bar links 21or in assembling them, to interfere with the upturned ends of the links.To provide against this an angular spring plate 38, to the horizontalpart of which the springs 22 connect, is by its vertical member securedby screws 39 to the upper part of the frame 23. These screws passthrough slots'40 in the plate thereby providing ready vertical simultaneous adjustment of all the rear ends of the springs so as to avoidall interference of the springs with the links 21 and drag ontheuniversal bar due thereto.

41 indicates a line lock blade and 42 a small curved arm attachedthereto near the end and extending rearwardly. This rocker arm actsagainst a portion of the frame to limit the movement of the upper end ofthe line lock blade so as to avoid unpleasant It will be observed thatthe springs 22 tain features of invention relating larly. disposed,

hold the key levers in their normal position and that wh en the frame 23is moved the length of the springs isadjusted and the ten- 17 are alldisposed in substantially hor'izontalplanes and the links 19 and 20 aresimithus affording a minimum strain, which is atensile one, to theoperation of the springs It Willalso be observed that each link 18 isconnected with a link 19 near its flexing connection with. a link 20.These features are of importance in the operation of a machine embodyingour present improvements.

The application for this patent is a division of our application No.25,384, filed May 3, 1915. The annexed drawings show cerparticularly tothe bearing bar for the bearing ends of key levers and an associatedtherewith. No claims are made herein to this subject matter, as claimsto thesefeatures are made in our original application for patent abovementioned.

e claim:

.1. In a typewriting machine, Fthe combination with the type bars andthe universal bar to which they are connected of an upright framepivotally supported betweenits upper and lower ends, a plate attached toand vertically adjustable on said frame, springs connecting the typebars with said plate and tending to pull the upper part of copiel 01'this patent may-be obtained for alining and guard plate the plateforwardly and means carried by the lower portion of said frame forlimiting its movement.

2. In a typeuuriting machine, the combination with the type bars and auniversal bar to which they are connected, of an upright rocking framepivotally supported between its upper and lower ends within the machinecasing, springs connecting the type bars with the upper portion of saidrocking frame and tending to pull the upper part thereof forward, and aset screw within the machine casing carried by the lower portion of'said rocking frame for limiting its movement.

3: In a typewriting machine, the combination with the type bars and auniversal bar to which they are connected, of an upright rocking framepivotally supported between its upper and lower ends within the machinecasing, springs connecting the type bars with the upper portlon of Saidrocking pull it forward, and. a

frame and tending to I set screw extending through the lower portion ofsaid rocking frame and engaging the inner rear wall of the machinecasing.

In testimony whereof, we have hereunto subscribed our names.

ED'WARD B. HESS. LEWIS C. MYERS.

five cents each, by addressing the "Commissioner of Patents, Washington,D. 0."

